Hal Finkel 6a34916fbf [PowerPC] Fix rlwimi isel when mask is not constant ... We had been using the known-zero values of the operand of the or to construct the mask for an rlwimi; this is not quite correct, but fine when the mask is constant. When the mask is constant, then the known zeros of the operand must be a superset of the zeros in the mask. However, when the mask is not a constant, then there might be bits in the operand that are not known to be zero that, at runtime, might be zero in the mask. Therefore, we check that any bits not known to be zero *are* known to be one in the mask. Otherwise, we can't fold the mask with the or and shift. This was revealed as a miscompile of MultiSource/Benchmarks/BitBench/drop3/drop3 when I started experimenting with constant hoisting. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@206136 91177308-0d34-0410-b5e6-96231b3b80d8		2014-04-13 17:10:58 +00:00
..
AArch64	[AArch64] Implement the isZExtFree APIs.	2014-04-09 20:51:21 +00:00
ARM	Add extra checks to mvn.ll test to prevent the "f1" check from matching	2014-04-12 04:47:04 +00:00
ARM64	Add the ability to use GEPs for address sinking in CGP	2014-04-12 00:59:48 +00:00
CPP	Begin adding docs and IR-level support for the inalloca attribute	2013-12-19 02:14:12 +00:00
Generic	CommandLine: Exit successfully for -version and -help	2014-02-28 19:08:01 +00:00
Hexagon	Fix broken CHECK lines	2014-02-16 07:31:05 +00:00
Inputs
Mips	Re-commit: [mips] abs.[ds], and neg.[ds] should be allowed regardless of -enable-no-nans-fp-math	2014-04-09 09:56:43 +00:00
MSP430	Mark FPB as a reserved register when needed.	2014-04-02 13:13:56 +00:00
NVPTX	[NVPTX] Add preliminary intrinsics and codegen support for textures/surfaces	2014-04-09 15:39:15 +00:00
PowerPC	[PowerPC] Fix rlwimi isel when mask is not constant	2014-04-13 17:10:58 +00:00
R600	SelectionDAG: Use helper function to improve legalization of ISD::MUL	2014-04-11 16:12:01 +00:00
SPARC	Remove the linker_private and linker_private_weak linkages.	2014-03-13 23:18:37 +00:00
SystemZ	Reenable use of TBAA during CodeGen	2014-04-12 01:26:00 +00:00
Thumb	Move the segmented stack switch to a function attribute	2014-04-10 22:58:43 +00:00
Thumb2	Move the segmented stack switch to a function attribute	2014-04-10 22:58:43 +00:00
X86	Add the ability to use GEPs for address sinking in CGP	2014-04-12 00:59:48 +00:00
XCore	[XCore] Add support for the "m" inline asm constraint.	2014-03-06 16:37:48 +00:00